problème android listview, passer outre getView() mais jamais être invoqué

Question

je remplacer la fonction getView(), mais quand je l'ai trouvé debug jamais être invoqué, vraiment bizarre ...

public class EntriesActivity extends ListActivity { 
private static final String TAG = "EntriesActivity"; 

private EntriesAdapter mArrayAdapter; 
private List<Entry> mEntries = new ArrayList<Entry>(); 

String mGoalId; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    // TODO Auto-generated method stub 
    super.onCreate(savedInstanceState); 

    setContentView(R.layout.entries_activity); 

    Bundle extras = getIntent().getExtras(); 
    mGoalId = extras.getString("goal_id"); 

    mArrayAdapter = new EntriesAdapter(this); 
    setListAdapter(mArrayAdapter); 

    new EntriesRefreshTask().execute(); 

} 

class EntriesAdapter extends ArrayAdapter<Entry> { 
    Activity context; 

    EntriesAdapter(Activity context) { 
    super(context, R.layout.entries_row, mEntries); 

    this.context = context; 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
    Log.v("EntriesActivity", position + ""); 
    LayoutInflater inflater = context.getLayoutInflater(); 
    View row = inflater.inflate(R.layout.entries_row, null); 
    TextView title = (TextView) row.findViewById(R.id.entry_title); 
    TextView name = (TextView) row.findViewById(R.id.entry_name); 
    TextView content = (TextView) row.findViewById(R.id.entry_content); 

    Entry e = EntriesActivity.this.mEntries.get(position); 
    title.setText(e.getTitle()); 
    name.setText(e.getName()); 
    content.setText(e.getContent()); 

    return (row); 

    } 
} 

private class EntriesRefreshTask extends AsyncTask<Void, Void, Boolean> { 
    private static final String TAG = "EntriesRefreshTask"; 
    private static final boolean DEBUG = Things43Settings.DEBUG; 

    private Things43HttpApi mHApi = ((Things43App) getApplication()) 
    .getHttpApi(); 

    @Override 
    protected void onPreExecute() { 
    if (DEBUG) 
    Log.d(TAG, "onPreExecute()"); 
    // showProgressDialog("load"); 
    Toast.makeText(EntriesActivity.this, "Loading entries...", 
    Toast.LENGTH_LONG).show(); 
    } 

    @Override 
    protected Boolean doInBackground(Void... params) { 
    if (DEBUG) 
    Log.d(TAG, "doInBackground()"); 
    try { 

    // GoalActivity.this. 
    getEntries(mGoalId); 
    return true; 

    } catch (Exception e) { 
    if (DEBUG) 
    Log.d(TAG, "Caught Exception logging in.", e); 
    // Preferences.logoutUser(foursquare, editor); 
    return false; 
    } 
    } 

    @Override 
    protected void onPostExecute(Boolean success) { 
    try { 
    if (success) { 
    Log.d(TAG, "success"); 
    mArrayAdapter.notifyDataSetChanged(); 

    } else { 
    Toast.makeText(EntriesActivity.this, 
     R.string.request_failed_toast, Toast.LENGTH_LONG) 
     .show(); 
    mArrayAdapter.notifyDataSetChanged(); 
    } 
    } catch (Exception e) { 
    if (DEBUG) 
    Log.d(TAG, "GoalActivity:onPostExecute():", e); 
    } 
    // dismissProgressDialog(); 
    } 

    @Override 
    protected void onCancelled() { 
    // dismissProgressDialog(); 
    } 

    public boolean getEntries(String goal_id) { 

    ArrayList<Entry> entries = mHApi.GetGoalEntries(mGoalId); 
    Log.v(TAG, entries.size() + ""); 
    if (entries.size() > 0) { 

    mEntries = entries; 
    } 

    return true; 
    } 

} 

Answer 1

Je pense que vous aussi avoir à surcharger la méthode 'getCount()' sur votre adaptateur (je remplace généralement getItem() et getItemId(), ils ne sont peut-être pas nécessaires.)

Si ce n'est pas le cas, votre ListView pense que vos données source ne contient aucun élément, alors pourquoi s'embêter à appeler getView sur l'adaptateur associé.